The Application of Atomic Absorption Spectroscopy on Detection of Engine Crankshaft Bearing Abnormal Sound

Li Dan Chen

doi:10.4028/www.scientific.net/AMR.496.427

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The Application of Atomic Absorption Spectroscopy on Detection of Engine Crankshaft Bearing Abnormal Sound
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 496The Application of Atomic Absorption Spectroscopy...

The Application of Atomic Absorption Spectroscopy on Detection of Engine Crankshaft Bearing Abnormal Sound

Abstract:

By now, it is hard for an effective determination of the engine abnormal sound according to the existing auscultation method based on human experiences and diagnosis aided by instruments. For this reason, the author presented an innovative method that was by the using of atomic absorption spectroscopy technology for a rapid determination of the engine crankshaft bearing abnormal sounds. Major metals contents (Cu and Pb) in 20 batches of Audi A6 engine lubricating oil were detected by atomic absorption spectrometry. Samples were taken from the oil of mileages from 5000km to 69000km and 3000km intervals. Then the databases of main metal contents of different driving miles were built within the same vehicle type. This study showed that the main metal contents were fluctuating with the increasing of driving miles within certain range. For the practical application, we built a connection between engine abnormal sound faults and the major metal contents in the engine lubricating oil. By comparing the metal contents in problem engine with the established contents changing trends chart, we could get a rapid determination about the engine abnormal sound fault without disintegration of the car. To sum up, the achievements of this study helped to reduce vehicle maintenance costs and improved the fault diagnosis accuracy in abnormal sound of engine crankshaft bearing.